Evidências de sucessão e dos efeitos da sazonalidade em uma comunidade vegetal sobre um afloramento rochoso na Serra da Jibóia, Santa Terezinha, Bahia, Brasil

Abstract

Rocky outcrops are have to a diverse and often endemic flora, it is strongly subject to seasonal climate conditions. In this light, this study aimed to obtain information about sucessional evidences and the seasonality effect that occurred in a plant community on a rocky outcrop in Serra da Jibóia, Santa Terezinha - BA. In February 2010 and March 2011, twenty soil islands were visually evaluated for the presence or absence of species and the determination of phytosociologica structure. Photographs of the profile vegetation were taken, determination of the community structure was carried out at the end of each season of 2011 to obtain information on seasonal effects. The vegetation in study showed little response to seasonality due atypical climatic conditions, which resulted in changing the structure of only 25% sampled soil islands. In which the increase in coverage of species was more evident in October. Evidence of succession were detected by observing the input of four species and the output of five species in six soil islands in this community, besides the coverage progression of certain species.